when i played ghosts at eurogamer (on what i thought was X1) the graphics still werent great. It was a bit clearer with slight improvement on detail but definately not a wow factor....at all. Was very smooth though.
Forza was a completely different kettle of fish. The clips on youtube really dont do it justice. Much better in the flesh and so smooth. Best looking racer ive seen on any console. Driveclub looked ok,not compared to forza though. need for speed looked good but used a lot of blur effect.

As for ps not having wifi.....lol so no true. I doesnt support dlna. Which is that it doesnt allow you to stream to it. Xbox 1 does. One of the really poor things ive read from sony is that the fuction they showed off which looked really cool has turned out to be a lie........ That you can turn off the ps4 and carry on playing the game on vita and take the game anywhere.....
well it turns out you can take it anywhere "as long as you are in the same wifi as the console" .... so basically wont work over 3g. THe only thing this is now good for is if you want to play the game in the bog. lol
shame as it did sound like a cool function.

ps4 wont play audio cds or allow external harddrives so unfortunately will have to bow to the mercy of sony to upgrade hard drives or their cloud setup....

xbox wont support external drives on launch either....